Mail receptacle



Feb. 6, `1923..

2 SHEETS-SHEET 2 L. W. CHSM MAIL RECEPTACLE F n LED FEB. 25, l 922 .lewis ZW. 62561114.

v7 AM WM Patented Feb. 6, 1923.

PATENT OFFICE.

LOUIS W. CHISM, OF SPRINGFIELD, MASSACHUSETTS.

MAIL BECEPTACLE.

Application tiled February 25, Serial lo. 539,065.

To all whom it may concern.:

Be it known that I, Louis \V.'Cmsn, a citizen of the United States residing at Springfield, in the county ofV llampden and State of Massachusetts, have invented certainrnew and useful Improvements in Mail Receptacles, of 'u-'hichthe following is a specification.

This invention relates to mail delivery 1o receptacles which have no permanent opening or'covered slot, such as now commonly in use, for the'insertion of mail matter, but instead are providedV with normally locked doors to be opened by aA master key carried by the p ostman and locked atrons` doors to be opened by the respective individual keys of the individual patrons.

The ob'ects in view are, to provide a receptacle airing a postmans door and a patrons door and so constructed that it-v muy be used either as :i single unit hy` itself by the occupant of a single family dwelling, or may be used with a plurality of other duplicate units vin combination and nested ytogether' therewith side by s de in ,a battery or compartment arrangement for multi le family dwellings or apartment houses, o ce buildings'and the like, in such combination and arrangement all of the postmans doors of the entire roup or battery being so interconnected, y the nesting arrangement merely by bringing the receptaclesinto side wall engagement and without any supple mental parts or any need for modification or change,-that all such postmans doors will move as one, so that the operation of av single postmans door lock will serve to loch or to release the postinun`s doors of the whole group or battery, which the constrnc tion is such, however, that no patron can have access to the interior of any receptacle or unit except his own; to provideai receptacle of such construction as will, whether the receptacle be used iis a single unit or as one of a combined group or battery of units1 prevent the insertion of prying blades` so that no levera ye can be exerted against the flat front surliiice outwardly; topprovide a receptacle that may be, and preferably will be, formed up out of sheet metal by easy and well knownstamping and folding or forming operations, in order that such receptacles may be produced in great quantities with great strength and durability und be sold for a reasonable price: to provide means tributing and inserting. the

for facilitating che workV ofidisiribuuon of the mail by the tpostman by so forming the postinans door at, when it is open, itwill 'present an inclined chute or large tray with a large opeii'upper s ide and end, in which a batch of mail matter, including papers, large'size popular weekliesfull length, other periodicals, small parcels and the like may be laid at one time, and this will be especially of aid when 'a large number of receptacles are used in a. group, the doors 1 of the whole group being open at the same time and forming a series of distributing trays open and closely adjacent to each other; to provide a receptacle having a ostmans door somounted that on the re ease of the lock thereof such door will automatically 'swing open or swin down to inclined o en position to provie a construction suc i as will, while providing vopen top and side trays, eliminate sharp corners and sharp metal edges at places the postman is liable to strike his hands against indismail; to provide a construction of receptacle which may be treated with any suitable', preferably rust resistant, material; and to provide. a receptacle of such form and outline as will readilylend ,itself to a great variety of forms of added .ornamental features if desired by an particular patron.

i/Vhen a number. of receptacles or units are connected up in a single group, as above mentioned, for apartment houses or ofiice buildings, all but one of the pstmans doors, preferably that of the middle receptacle. will have their lock bolts or latches held in inoperative posit-ion, as by a pin, screw, stud,' catch or by any other suitable means, and will have their key-holes either Filled up or covered over, so that the postman will have 'but the one lock 'to operate for the group and will be able to determine at a glance the particular lock to be operated.

0f course the receptacles herein described and illustrated may be made of any suitable shape, and of any suitable material, preferably` sheet metal, and weight of material` and will be made to conform to such requirements of the postal authorities overning such matters as are in force at the time of manufacture.

In the accompanying drawings:

Figure 1 represents a front elevation 'of a mail receptacle embodying my invention;

the journals or hinge-butts of the postmans doors when'a plurality or receptacles are combined together in .-a single group or series; i Y h Figure 5, a detail perspective view of one of the upper side4 corners of one of the receptacles, i lustratin the dove'tail construction for holding the sides 11 and top 12 of the back or casing 2 of said receptacle together, the construction of both of the-upper coi-- ners thereof being the same;

Figure 6,- anfinterior detail view of the journal or hin e-butt 32 of one receptacle nested in the larin 37 and' journal or hin e-butt 34 of an jacent receptacle, the sait? journals or` hinge-butts being interenV aged;

`igure 7, a detail sectional fragmentary view onl the line 7 7 of Fig. 6;

Figure 8, a' detail sectional view through one end portion of the roll 9,'rod `10 and the adjacent portion of the adjacent side 11 of oasingor back 1 the other end of the rod 10 being similarly engaged with the other aide 11 ofsaid casing or back 1; i

Figure 9, a fragmentary detail view to illustrate how all of the locks. but one, of the postmans doors of a group of receptacles or units when combined together, may be covered over; and

Figure 10, a fragmentary detail view illustrating, by way ofexample only, one way by which the bolts or latches of all of the locks, except one, of the postinans doors of -a group of combined units or receptacles will be held inoperative.

Referring now in detail to the drawings. l designates the postmans door, 2 the back of casing, which may be mounted in place in any suitable manner as, for' instance, by means of screws 3 passing through countersunk washers 4, through the bask wall nl' casing-or back 2 and into a suitalile,s\ip

porting medium or studding, not sh'own.

lThese Washers will serve to reinforce the material of said back wall of casing or bark 2 to guard against tearing out around the -screw perforations, thus preventing unam tliorized removal by pilferers or thieves, and the washers 4 are countersunk, as best shown in Fig. 3, so that the heads' of the screws will not project beyond thesurface of said washers and so will not form abrupt pio 'supporting it when o the adjacent portions o je'cting edges to catchA mail matter, likewise, and for the same reason, the outer edges of the washers 4 are rounded otor bveled, 'as shown.

The door`1 has sides 5, referabl integral therewith, extending e full distance rom the front .of said door 1 to the interior face of back 2 or substantially thereto, the upper end edges of saidsides 5 being rounded oli' at 6 as shown Vto grmit the' door'l to swing outwardly in its arin its pivotal ypoing-and, has its ower end 7 curved on an arc concentric withtho axis of its hinge, .the said'lower end 7 fitting in', and engagin lower end portion 8. of the back or casing 1 and having sliding enthe inner face of the corre` .spondingly aped or around gagement therewith, the length and shape of said portions 7 and 8 being such that Awhen the door 1 is in its extreme open position the edge of end portion I `will lie hat against the adjacentpdrtion of the inner face of f portion 8 of back or casin lso as to guard against the endv or edge o anyienvelopeor paper lodging between these two portions and so possib 'ed or interfering with thefree movement` of the door 1. l u

The edge of the lower ortion B of back or casing 1 will. preferab y be rolled over,

as at 9, to forni a rest limitin the outward and downward movement o i1 and, if desired as a reinforcement, a ro venient method of 'construction thisrod 10 ybeing overlooked or inutilat- 10 maybe fitted into.-

said roll. As asimple, economical and con-100 may be extended throutgh beveled holes in the sides 11 of the casing 2, theen'ds of said rod 10 being upset or spread in said holes; as illustrated in Fig. 8, and being flush with. the outer lateral faces of said sides 11, so as to firml secure the bottom portion 8 and sides 11 to' gether while at the same time providing for yreinforcing the roll 9 and avoiding lateral projections Which might interfere with the nesting combination of the receptacles in a single group or battery of uiiits.

The upper ends of the sides 11 ma be connected with the` top 12 of tlie bac or casing 2 in any suitable manner, though they will preferably be interconiiiected with the top 12 by means of a dovetajl form tongue 13 extending from, and preferably integral with, side 11, said ,tongue 'i3 being folded at right angles to' the side 1l and pressed into a correspondingly. shapedirecess inv the top l2, and a similarly `formed tongue 14 extending from, and'pi'eferably integral with, top l2 and pressed into a correspond` nlysbaped recess in the upper portion of si e 1l, all as illustrated in Figure 5. This is ii very strong and also very economical winnen-lion and may be easily made by folding over and pressing thetongues 13 and 14 into' place during one of the stamping or folding operations with no need for a special operation-or step for this especial purpose:

The postmans door l is provided with two small glass covered sight openings 15. through which the patro'n may quicklysee if there is any mail in his receptacle, and a name slot or opening 16 behind which. and

closely adjacent thereto, is mounted a bracket 17 to receive a 4name card or strip. AThis opening 16 may be covered by glass if desired.

A large opening is formed .in the door 1 to receive rthe patrons door 18, which is pivotally mounted in the door 1 by means of a pin 1 9 paing through hinge members 20 extending. from one side portion of the door 18, and the intervening hinge member 21extending from the edge of the correspondingand adjacent side wall of said largel opening. The material of the-door 1 adjacent the edges of the ends and other side of said lar 'e opening is bent at right angles toward t e back or casing 2V toform a reinforcing and guard strip or rib 22.

The door 18 has .its end portions and free side portion folded back upon itself to form a flat flange 23 lying flat against the adjacent portions of door 1 ari* extending well beyond the walls of the large openingr closed by said door 18, and also has thematerial of said portions extended and bent at right angles to said flange 23 toward the back or casing 1 to form a-reinforcing and guard strip'or rib 24 extending around the end portions and free side of said door 18, said rib 24 lyinclosely adjacent to; or in con,

tact with, e rib 22, the -location and avrrangement beinv such, however, that the portion of the rib 24 extendinffgparallel'4 to, and adjacent to. thefree side o oor 18 will not bind against the corresponding portion of the rib 22 as the door 18 swings in open,- m or closing.

his rib 24 in addition to bracing the door 18 will alsoact as a stop to prevent the insei-tion of a prying blade, in a -plane parallel with the door l and the door 18 hetween said doors and the ribs. 24 and 22 being closely adjacent to each other` will stitl'en the material of the doors 1 and 18 at closelfy adjacentpoints and so will prevent and de ormation which otherwise mi lht` permit a thin prying blade to be force Ibetween the adjacent faces of these doors 1 and 18.

The top 12 has its 'front portion extended down slightly as :1t-.25 substantially at right angles' and -then backward substantially at right angles, as at 2G, to' form achannel reinforcement for this portion ofthe top 12,

and the upper portion of the door l las its edge portion folded back toward the casing or back 1 substantially at rightaugles to form a portiowsuhstanliallr parallel to the or into a suitable socket in die rib or portion.

26 midway of the ends thereof, a suitable key-hole 29 being provided for the operation of said lock 28 ,from the exterior of the rel ceptacle by means of the postmans master ke gimilarly, a suitable lock Il() is mounted on the inner fa-' of the atrons door 18 in such tend yond the rib 24 and will be received in a Suitable opening or socket in therib 22 midway between the ends of the 4side of the large opening parallel to the pin 19, a suitable key-hole 31 being provided for the operation of said lock from the exteriorof said receptacle by means of the particular patrons key.

In the construction illustrated by wayof example thc lower portions of the sides 5,'

preferably -integral with the door ,1, are specially formed, onc side being drawn out at such point to form a short cylindrical hollow small hinge boss or butt 32 of large diameter and having a closed end 33, ,the other side 5 of said door l being drawn in at such ,point-to form a shorter hollow large hinge boss or butt 34 of n diameter larger than that of boss or butt 32 and of a length shorter than boss or butt 32, said boss or butt 34 having its inner-end 35 closed, and the axes of said bosses or butts 32 and 34 being in alignment.

The hinge boss or butt 32 makes a snug [it in a large bearing 36 formedb cutting out a portion of the right hand si e 11 of back or casing 2 and drawing out the material, .or Shaping it up, to form an annular flange ex tending substantially at. right angles to the. plane of side 1.1 and forming the walls o-f said opening` and the hinge boss or butt 34 is operatively mounted by means of an inwardly folded annular flange forming a bearingr in the left -hand side 11 of the back or casing 2, said bearing 37 having its inner 'end open to permit free access to the closed sition that itsbo t or latchwill exthat the length of hinge butt 34 shall be such as to receive all that rtion of bear- .ing 36 and hinge-butt 32 w ich rojects be- `ond the external face of its sie j11 of the ack or casing 2. Y

Vlfhile it is preferred that the hinge-butts 32 and 34, with their closed ends 33 and :i5 res cuvei'y, shaiibe formed integrallywith t e respective sides 5 of the door 1, as being easy of accomplishment in the usual well known sheet metal stamping, folding and associating operations, and as being a very strong, rigid,`eflicient`and exceptionally economical construction .lending itself to quantity production by machinery such s usuali employed for this pur'pose, and althougg constituting -important detallsrof 'my invention, in its broader aspects such details might be substituted by separate hingebutts bolted, riveted, Welded or otherwise suitably secured in place in any convenient and well known manner,ior might be substituted by other suitable means, and such construction would be within my inventionas broadly envisioned, but such substitute construction as to this point would add to the number of operations to be`i`performed in the construction of the receptacle and Would add appreciably to' the cost while decreasing the rate of production.

What has been said of the' hinge-butts 32 and 34 as to the feasibilityof their being substituted by other construction, for instance being separate parts suitably secured incposition, applies also to the bearings 36 an 37.

The end 35 of vhinge-butt 34 hasY a plurality of long thin lugs 38 estendr'ig at right angles' from the outer face of said end 35 toward its respective side 1i of casing 2, these lugs 38 not being concentric with the axis of hinge-butt 34, but preferablyextending in a straight line tangentially of the axis of said hinge-butt 34. These lugs 38 are preferably formed by stamping out the metal of said closed end 35 on three ysides and then bendingt it on its connected side to a position at right angles to the face or said end 35. These lugs 38 are preferably three in number, spaced equi-distantly from, y

and about, the axis of hingebutt 34 and are adapted, and intended, to snugly fit into, and project through, straight, tangential, registering slots in the closed end 33 of ,11 of casin hinge-butt '32 of an adjacent receptacle, which hinge-butt 32 is received in the bearing 37, as shown 'in Figure 4,when a series of these receptacles are arranged in com bined group orbattery relation.-

'lugs 38 need Vnot project from the tace bf end 35 so fr'as shown, lit'bemg suicient if theyproject therefrom to such a degree as to iitin'to the slots of the adjacent end 33 of the 'hinge-butt 32 of the postman's door Lof an 'adjacent receptacle so as to interloclrgthe doors 1 of such receptacles, the object of having such lugs 38 and slots receiving them being to up, or inten, lock, the doors 1 so that all the doors liso 80 interconnected'inay be opened or closed as y a single door by a single movement on the part-,of the'postman or mail carrier.

Ocourse thj Iugs38n need not be integral with theY ends 35, separate ribs', lugs or cleats might be weldedor riV ted theretoh likewise, instead of the slots irthe lends 33 to receive the flugs 38, recessed parts' ada ted to receive said lugsB' might be-.wel ed' or riveted to the ends '33, but allvtlis would very materially add torthef expense; would involve risk of such partsmi g loose, and would greatly cut down tlieipossible rate of production. v i- It will be noted that the pointvof ravity of the door Land the'door 18 carri thereby, lies a plane well in front of the axial line passing throu -h the, hing'ebutts 32 and 34 and that, thereore, asson asthe postmans lock 28 is'releasmiA the door 1 will Vautomatically, drop open Ur swing'open, ro-

tating or moving about its axis by the action of gravity. A

In assembling in a vgroup or series, as illustrated in Figurevl, the receptacle A. is ar- 106 ranged with its. right hand side 11 of cas i ing 2 in engagement with the left hand side 2 of receptacle B, the' bearin 3,7 of whic receives the bearingl an` hinge-butt 32 of receptacle A, the' end 33 110 of ingerbutt B'of receptacleA receiving in its res tive slots the res ctive lugs 38 eatendin from end 35 of hinged-butt 34 of receptacle which-latter receptacle,- B, has itsright h nd sidel 11 of its casing 2 in en 115 gagement ith the left hand side 11 of casing 2 of ptacle "C, with its bearing 36 and hinge-lutt"32 .nested in the bearing 37 and hinge-blitt 34 of receptacle C, and with the lugs 38 of the end 34 of the hinge-britt 120 34 of receptacle C protruding into, yor y t hroiigh,as shown, the respective cooperating slots in end 33 `of hinge butt 32 ofreceptacle B, and this arrangement may be continued for a large number of rece tacles. 126

The special point in havin the ljugs 3S and coo erating slots of the orm and out` line an relative sizes as shown and above described is to obtain a large bearing surface s0 that both side faces, as Well as both 130 end faces, of the lugs 38'wi1l hea'x` against the walls of the respective slots of the cooperatinfv hinge-butts 32 in opening and closing t 1e doors, instead of just the narrow end edges which would rapidly wear'out or cutunder, reducing the size of the respec- .tive lugs 38 and increasing the lenth of the respectivecooperatmg 'slots rapid yan'd so resulting in a large degree of lostmotion in thev interengaging means of the doors 1 of a particular group of receptacles. Any suitable arrangement, other than that shown as well as that shown, which will result in the sidefaces of the lugs 38 being in operative engagement-with the side walls of the cooperating slots would accomplish or substantialljr accom lish the object here in view and will he witli tion. j

Only thevpreferred form-or construction has been shown and described and it will be obvious that many changes and modifications may be made while still remaining within tile scope and spirit'fV my invention.

Having thus described my invention, what I claim as new 'and desireg to secure by Letters Patent is:

1. A plurality ofioompletc unitary recep tacles adapted to he mounted in supported positionfin .adjacency with their adjacent sides substantially in engagement to form a single group of combinedreceptaclesa each said receptacles havinga doorswinging on an axis.y the axes-@of said doors of all of said receptacles being in alignment. the. said door of each receptacle heing provided with means for engaging with thegsaid doors of the receptacles on either side f such' receptacle so -that the said doors of 4all of thel said receptacles, when arranged in combined relation, will all be connected together and move simultaneousl),r to open or closed position` 2. A plurality Vof mail delivery receptacles adapted to he mounted in su'pportei'l position in'adjacency, a door journaled in each of said receptacles', and means for actuating the door of 'each receptacle by the door ol one of the next adjacent receptacles.

3. A )lurality of mail delivery receptacles adapted to be' mounted in supjliorted position in adjacency, a door pivotal v mounted in cach receptacle. and door actmiting means carried by each door und aclnptcdto coopcrate with the door actuating means of thcl door of the next adjacent receptacle lo causc simultaneous movement ol the one door by the movement of the other door.

lv A pluralityof mail delivery receptacles adapted to be mounted in supported posI- tion in adjacency. nachv of said rc'cptaclcs comprising a door. cach said door being provided on one side with lan clcmcvt which projects laterally lx onc side ol' the pa|- ticular receptacle. and cach said receptacle in the-spiritof my invcnand its door being so formed at its other side as to receive the projecting element of the adjacent side portion of the immediately adjacent receptacle to couple said doors together for simultaneous movement.V

5. A receptacle capable, of use as asingle unitary receptacle complete in itself or as one of the units of a series ofcombined u nits,

saidf unit comprising a casing and al door..

having lateral portions, the respective sides of said casing being provided with openings to leave parts of the respective side portions of said door exposed therethrough 1n order portions formed with' bealings,said bear- ,said unit comprising a casing having side` lugs having their axes in alignment, in combinatioir with a door having trunhions, one of said trunmons being receivedV in one of said bearingsand the other trunni'on receiv-l j ing the other bearing, which is adapted toV receive u portion of the 4adjacent trunnio of the door of'an adjacent receptacle when said receptacle is used as one of the units of a series of combined units, the respective side portions of said easing being provided with openipgs througl'rwhicli the doors of the immediately adjacent' receptacles of'a series of.comlnned receptacles maybe connectcd with each other for movement us 9J single element Ain openinganil closing.

{T2-A receptaclecomprisingtwo members pivotally cimnectcd together adjacent the lower cud of the receptacle and having overlapping side ahd end-portions havingsljding engagement with each other, one oi ,said members codstjtuting :i movable part or lar 'c door. the other member being adapt/ed to )e permantly mounted and held in fixed position upon a suitable support, the upper end of said door and thc up|n.i*'po|'tion vof said stationary membel'flneing folded over toivui'd the innerrear face of saiilstationary member and. carried a substantial distance toward thc same and being located with their 1 adjacentY faces vci'y closely'adjacent fach` other when said door is shutfor the purrpbse I ol' preventing thc insertion of a p| ving bladc bclwcen said inemlrers.

H. mail rem-.iving rece ltaclc. comprising a easing adapted to )e |nr|uanently mounted upon a suitable support and haring a hack wall. top and sides. said sides ha ving bearings adjacent tllcilf`l0\\cr ends. in coni hinalion with a door having a front wall, side walls add curved bottiuu ortionathc said sidc walls normally fitting lieiween thel sides ol thc casing a-nd being provided with trunnions having their axes in alignment i said sides having bearin and received by theres tive bearings above mentioned, said trunnions being so formed that when two or more duplicate receptacles are'arranged in adjacency they may be so arranged that the trunnionv of one side. of the door of one receptacle will enga e and interlock with the trunnion of the a jacent side of the door of the immediately adjacent receptacle, whereby when so arranged the doors of said rece tacles will move simul taneously and to lie degree in opening and 9. mail receivin receptacle comprising a casing adapted to permanently'lixedly mounted u n a suitable su port and having a back wall? top, sides an arcuate bottom, said sides having bearings adjacent their lower ends, in combination with erdoor having a front wall, side walls and arcuate bottom portion, the said side walls of said door fitting between the sides of the casing and beingrprovided with tru'inions havingtheir axes in alignment and 'received by the re spective bearings above mentioned, said trunnions being so formed that when two or more duplicate receticles are arranged in adjaoency they may so arranged that the trunnion of one side ofthe door of one receptacle will engage and interlock with the trunnion of the ad acont side of the door of the immediately a jacent receptacle, whereJ by, when so arranged, the doors of said receptacles will move simultaneously and to like degree in opening and closing', and the said arcuate bottom portions-ofthe casing and door being concentric with the said trunnions and having a surface sliding engagementwith each other.

10. A mailieceivin receptacle compris ing a casing adapte t0 be permanently fixedly Vmounted upon a suitable support and havinga back wall, top, sidesand bottom, ad'acentf'one end, in combination with a oor iaving afront wall and side walls, the said sidesbvalls of said door fitting between the sides of the casing and being provided with trnnnions having their axes in alignment and received by the respective bearings above mentioned,` said trunnions being so formed that when two or more duplicate receptacles are arranged in adjacency they may be so ar ranged that the trunnion on one side of the door of one receptacle will engage and interlock with the trunnion of the adjacent side of the door of. the immediately adjacent receptacle, whereby, when so arranged, the doors of said rece tacles will move simulY taneously and to l' e degree'in opening and closing.

1l. A mail reoeivin receptacle compris` ing a casing adapte to be permanently mounted u on a suitable support and having a back wal [ti/gp and sidrs, said sides having bearings adj nt their lower ends, in combination with a door normally locked and having a front wall, side walls and curved bottom portion, the said side walls of said door fitting between the sides of the casing and being provided with trunions-having their axes in alignment and received by the respective bearings above mentioned, said trunnions being so formed that when two or m-ore duplicate receptacles are arranged in adjacency they may b e so arranged that the 'lli trunnion of one side of the door of one recep tacle will engage and interlockwith the trunnion of the adjacent sideof the door of the immediately adjacent receptacle, whereby, when so arranged, the doors of such receptacles will move simultaneously and gi like degrec` in opening and closing, and means for limiting the outward movement of said door and supporting it in an inclined open position, wherein it presentsw receiving tra 86 with ietainin sides and'I an open upper si e and front en A y 12. A mail receiving 'receptacle comprising a casing adapted to be .permanently fixedly. mounted u n a suitable support and 90 having aback wa top andsides, said sids having, bearings adjacent their lower' end's, in combination' with Va door having a front wall, sides and bottom, the sai side walls of said door fitting between the sides of the casing and being provided with trunnions having their axes in align'ment and received bg the respective bearin above mentioned, t e end rtions of sa'i trunnions -boing so formed t at 4when two or inpre duplicate re- 100 oeptacles are arrangg' i'ii "adjaoency they may be so arranged the trunnion of one side of the door of one receptacle will engage` and interlock with the trunnionof the 'adjacent side o f the door of the nin'i'ediately ad- 106 jacent receptacle, whereby, whgrl so arranged, the doors of such rece taeles will move simultaneously and to li e degree in opening' and closing. p i l 13. A-reeeptacle comprising a sheet'metal 119 casing having-side` portions Aformed with laterally projecting open lended bearings drawn up therefrom, said bearings having' their axes in 'alignment` one of said bearings protruding beyond the 'external face 115 of its respective side portion and the other, extending from the' interior face of its speotive side' portion toward the other bearing, in combination with a door having trunnions, one of said trunnions being received in one of said bearinggand the other trunnion receiving the' other bearing.

14. A receptacle com rising a casing having side portions provided with bearings, in combination with a metal door having integral trunnions fitting in and receiving the respective bearings, one o said trunnions protruding outwardly beyo d the plane of the external face of the adjacent side portion 0f said casing and the otherof said 130 trunnions having a recessed outer face receiving the other1 and inwardly extending, bearing.

15. A receptacle coijprislng a casing hav- 5 ing a large diameterpen ended bearing extending toward, and in, the interior of said receptacle, and4 a smaller diameter openended bearing' extending `from the outer face of the opposite rtion of the receptacle, said bearings havingtheir axes in ali ment and the larger diameter bearing being a size to snugly. receive the smaller diameter bearin in combination with a door having a dy indrical trunnion received in the small diameter bearing and a cylindrical recessed trunnion of larger diameter receiving the larger diameter bean the smaller .diameter trunnion being provi ed with protrusions and the larger diameter trunnion 20 being so formed that itimay receive the said protrusions of the door 'of duplicate receptacle if the latter be arranged in adjacency thereto with its smaller dianeter trunnion` and bearing fitting into the larger diameter bearing and trunnion of said receptacle.

16. A receptacle comprising a casing hav,-

ing sideeiortions provided with suitable open-end bearings, in combinati with a sheet metal door pivotally" unted in said eosin by means of trunnons integral with said oor and located in said bearin one of said trunnions being provided with tangentially extending tpermections and the other of said trunnions ing provided with registering tangentilly extending sockets ual in number to said projections and a spted to snugly receive the said projections of the first mentioned trunnion of a duplicate receptacle.

17. In combination, two receptacles each comprising-a easing having open-ended bea-rings and a. .door having trunnions mounted in said beari the trunnon on one side of one' rece tac e projecting beyond the external face o the casing thereof and having a closed end formed with projeetio andthe trunnion on the' adjacent side of tv e other receptacle, and the bearing therefor, being formed to receive the above mentioned projecting trunnion and its bearing and being provided with` means for snugly. receiving the said plrojeotions whereby, the adjacent sides of t e casings of said receptacles being substantially in e ment th doors of said receptacles will be interloc for movement togetherv as a single element.

LOUIS W. CHISM. 

